JPS6470722A - Scanning optical device - Google Patents

Scanning optical device

Info

Publication number
JPS6470722A
JPS6470722A JP62227672A JP22767287A JPS6470722A JP S6470722 A JPS6470722 A JP S6470722A JP 62227672 A JP62227672 A JP 62227672A JP 22767287 A JP22767287 A JP 22767287A JP S6470722 A JPS6470722 A JP S6470722A
Authority
JP
Japan
Prior art keywords
laser light
scanning
reflecting
constant speed
lens
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62227672A
Other languages
Japanese (ja)
Inventor
Akiko Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP62227672A priority Critical patent/JPS6470722A/en
Publication of JPS6470722A publication Critical patent/JPS6470722A/en
Pending legal-status Critical Current

Links

Landscapes

  • Laser Beam Printer (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Fax Reproducing Arrangements (AREA)

Abstract

PURPOSE:To easily control a write starting position, by providing an optical detecting means provided at a part other than a scanning area on a medium to be scanned, and a slit member having plural holes with width <=1/2 of a beam interval in the scanning direction of a light beam provided at the light beam incident side of the means. CONSTITUTION:Laser light L emitted from a laser light emitting element 6, after being changed to a prescribed parallel ray by a collimator lens 5, is projected on the reflecting surface of a rotary polygonal mirror 3, and the polygonal mirror 3 is provided with plural reflecting surfaces, and is rotated at constant speed by a constant speed motor 4 in a direction of arrow head 7, then, the laser light is deflected sequentially in a direction of arrow head 12. An f-theta lens 2 is arranged on the way to deflection, thereby, scanning speed or a focal point can be prevented from being changed due to a deflection angle. Printing is performed by an electrophotographic process device (not shown in figure) by exposing a photosensitive drum 1 by the laser light. At this time, the laser light, after being reflected on a reflecting mirror 14, is made incident on an optical fiber 18 passing a reflecting mirror 15, the hole 16a of the slit 16, and an image-forming lens 17, and scanning start point is controlled by detecting the laser light by an optical detector 19.
JP62227672A 1987-09-11 1987-09-11 Scanning optical device Pending JPS6470722A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62227672A JPS6470722A (en) 1987-09-11 1987-09-11 Scanning optical device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62227672A JPS6470722A (en) 1987-09-11 1987-09-11 Scanning optical device

Publications (1)

Publication Number Publication Date
JPS6470722A true JPS6470722A (en) 1989-03-16

Family

ID=16864520

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62227672A Pending JPS6470722A (en) 1987-09-11 1987-09-11 Scanning optical device

Country Status (1)

Country Link
JP (1) JPS6470722A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5767375A (en) * 1980-10-14 1982-04-23 Canon Inc Multibeam recorder
JPS61137122A (en) * 1984-12-07 1986-06-24 Hitachi Ltd Laser printer device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5767375A (en) * 1980-10-14 1982-04-23 Canon Inc Multibeam recorder
JPS61137122A (en) * 1984-12-07 1986-06-24 Hitachi Ltd Laser printer device

Similar Documents

Publication Publication Date Title
KR100456021B1 (en) apparatus for detecting a synchronizing signal
KR100264761B1 (en) Optical scanning device
KR100477495B1 (en) Light-scanning optical system and image-forming apparatus comprising the same
JPH0799410B2 (en) Deflection scanning optical system
JP3334447B2 (en) Optical axis adjusting method of optical scanning device, optical axis adjusting device, and optical scanning device
JPH06148543A (en) Optical beam scanning optical beam system
JPH01142705A (en) Image scanner and lens apparatus thereof
JP2546366Y2 (en) Exposure device
US4902084A (en) Optical scanning system
US5260570A (en) Laser beam scanning system utilized in an image forming apparatus
JPS6470722A (en) Scanning optical device
JPH04321370A (en) Optical scanning device
JPH04242215A (en) Optical scanner
US5317444A (en) Light scanning apparatus
JPS5926006A (en) Detection of beam position in multibeam scanner
JPH03274016A (en) Scanning optical device
JPS6411222A (en) Image recorder
KR890004256Y1 (en) Optical detection instrument of laser beam
JP2728889B2 (en) Information recording device
JP2534251Y2 (en) Writing optical system
KR100395531B1 (en) laser scanning apparatus
JP3579530B2 (en) Scanning optical device
JPS63102543A (en) Synchronizing detecting device for laser light scanning device
JP2001281588A (en) Emission position adjustment structure for plane- parallel plane
JPH05127106A (en) Laser beam scanning optical device